Charizard-Mega-X @ Charizardite X  
Ability: Blaze  
EVs: 252 Atk / 4 Def / 252 Spe  
Jolly Nature  
- Dragon Dance  
- Flare Blitz  
- Earthquake  
- Roost  

 
Tapu Lele @ Choice Specs  
Ability: Psychic Surge  
EVs: 124 HP / 252 SpA / 132 Spe  
Modest Nature  
IVs: 0 Atk  
- Psychic  
- Psyshock  
- Focus Blast  
- Moonblast  

 
Garchomp @ Rocky Helmet  
Ability: Rough Skin  
EVs: 248 HP / 204 Def / 56 Spe  
Impish Nature  
- Stealth Rock  
- Earthquake  
- Flamethrower  
- Toxic  

 
Magearna @ Assault Vest  
Ability: Soul-Heart  
EVs: 248 HP / 8 Def / 252 SpD  
Sassy Nature  
IVs: 6 Spe  
- Volt Switch  
- Fleur Cannon  
- Ice Beam  
- Iron Head  

 
Tornadus-Therian @ Flyinium Z  
Ability: Regenerator  
EVs: 160 HP / 12 Def / 84 SpA / 252 Spe  
Timid Nature  
- Hurricane  
- Knock Off  
- Taunt  
- Defog  

 
Serperior @ Choice Scarf  
Ability: Contrary  
EVs: 252 SpA / 4 SpD / 252 Spe  
Timid Nature  
IVs: 30 Atk  
- Leaf Storm  
- Hidden Power [Fire]  
- Defog  
- Knock Off